Solutions that make a difference

STS Defence are specialists in mission-critical communications and intelligent systems, and operate in markets including the defence, marine, aerospace and nuclear sectors.

We help our customers to resolve complex technical challenges; investigating and creating innovative solutions, designing and manufacturing assemblies and sub-assemblies, and integrating and supporting systems through‑life.

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We deliver communications systems and support to both the naval and land domains.


We manufacture equipment and assemblies for the civil and military aerospace sector.


We manufacture subsea cabling systems and are currently condition monitoring systems for shipping.


We provide integrated training solutions and safety consultancy to the nuclear and defence sectors.

What we offer

Research & Technology

We undertake research into new technologies that help our clients resolve complex technical problems.

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Design & Manufacture

We produce electronic and mechanical systems and sub-assemblies where quality and security are paramount.

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Integration & Support

We integrate electronic systems onto military platforms and provide integrated logistic support through-life.

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Supporting you from idea to in-service

Wherever you are in the product lifecycle, we can help.  We work out ways to exploit new technology. We help mature concepts into workable prototypes and small-batch production, and we integrate systems and equipment and support them through-life.

By operating across the life-cycle spectrum, we offer you an agile, low-risk and cost-effective way to investigate, develop, deploy and sustain technology that delivers results.

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News and Articles

16th July 2018

STS Defence selected for new defence research framework

STS Defence Limited has been selected to form part of the new UK MOD Progeny Maritime Research Framework, as a member of Qinetiq's 'Team Rhodos'.
2nd February 2018

Who’d be a test dummy?

We have been busy testing FiRST, the world's first predictive temperature alarm. Although the unit did great, the test mannequin had trouble!
2nd January 2018

A hat-trick for STS

Over the past twelve months, we have been awarded three new accreditations covering quality, environment and cyber-security. Go on, ask us a question!

Case studies

Water-cooled cabinets for the Royal Navy

Addressing a complex and challenging technical problem for military maritime environments in above and below surface platforms.

Gunnery Communications

Quickly developing a solution to improve gunnery control and communciations

Maritime Multimedia

Providing internet access to the crew's aboard the Royal Navy's warships.

Configurable Communications Masts

High reliability and configurable masts for maritime applications

View more case studies

Join the team

Do you want to be part of a company that’s going somewhere?  We are looking for individuals with a passion for solving problems.  Whether you are an experienced technology professional or just starting out in your career, STS Defence offers you a chance to grow.

Find out more about working with usView our current vacancies